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Old 02-05-2005, 06:56 AM   #1
aspen
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Civic Feul

i was wondering would it matter if i put in octance 87 vs, 89 or 91 in my 1997 civic? i beleive the user manual said to use 87 fuel, and thats what i have been using. however people tell me that 91 and 93 are better, because they cost more and contain less volitile substances. so i wanted to know should i switch to octane 91 or 93, or continue with regular? thanks
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Old 02-05-2005, 07:05 AM   #2
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Quote:
Originally Posted by aspen
i was wondering would it matter if i put in octance 87 vs, 89 or 91 in my 1997 civic? i beleive the user manual said to use 87 fuel, and thats what i have been using. however people tell me that 91 and 93 are better, because they cost more and contain less volitile substances. so i wanted to know should i switch to octane 91 or 93, or continue with regular? thanks

well, if you use octane you need NOS first. Octane fuel would be best with NOS because the mixture will casue the piston to explode morer. It would be awaste of money to use octane fuel with out NOS. So if you get the octane, install NOS on the car.
PS. if you dont know what NOS is it is a bottle and when you push a button on the steering wheel NOS goes into the engine and you go superfast that everything is blurry. (watch fast and the furious if you still dont know what NOS is)

Last edited by CarEXPERT : 02-05-2005 at 07:08 AM.
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Old 02-05-2005, 09:15 AM   #3
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I feel for you guys. The lowest RON rating for unleaded petrol in Oz is around 91-93, lead replacement 96 and premium 98.
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Old 02-05-2005, 06:03 PM   #4
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i just go to quick trip cause you can can 87 and 91 octance fuel for the same price..so i get 91
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Old 02-05-2005, 06:57 PM   #5
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Quote:
Originally Posted by aspen
i was wondering would it matter if i put in octance 87 vs, 89 or 91 in my 1997 civic? i beleive the user manual said to use 87 fuel, and thats what i have been using. however people tell me that 91 and 93 are better, because they cost more and contain less volitile substances. so i wanted to know should i switch to octane 91 or 93, or continue with regular? thanks

There is no reason to buy 89 91/93/94 for your car.
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Old 02-05-2005, 06:58 PM   #6
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Originally Posted by Eclipse_2004
i just go to quick trip cause you can can 87 and 91 octance fuel for the same price..so i get 91

The same price? Doubt it. I've never seen higher octane fuel the same price as 87..not even when new places open up.
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Old 02-05-2005, 06:58 PM   #7
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I feel for you guys. The lowest RON rating for unleaded petrol in Oz is around 91-93, lead replacement 96 and premium 98.

We can pat the back of environmentalist liberals of the 70s for our shitty fuel in the U.S.

On the West Coast they dont even GET 93/94 like we do on the East Coast. They get the lovely Choked down horrible 91 octane thanks to the lovely Californian representatives.

We do get 94/100/110+ but, you'll have to visit a near-by track Sunoco for that and expect to pay $3.50-$4.00/gallon for 100 or 104 (which our 93/94 here in Georgia is only $1.99/gallon right now).
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Old 02-05-2005, 07:35 PM   #8
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so there is no advantage of using 91/93 over 87?

also i have seen gas stations where 87, 89, and 91 were all the same price, the price of preimum+, so everyone gets the 91.
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Old 02-05-2005, 10:29 PM   #9
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exactly thats what i was talking about..before this thunderbird guy comes along and says no way...dont say it aint so unless u see it
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Old 02-05-2005, 11:46 PM   #10
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Quote:
Originally Posted by CarEXPERT
well, if you use octane you need NOS first. Octane fuel would be best with NOS because the mixture will casue the piston to explode morer. It would be awaste of money to use octane fuel with out NOS. So if you get the octane, install NOS on the car.
PS. if you dont know what NOS is it is a bottle and when you push a button on the steering wheel NOS goes into the engine and you go superfast that everything is blurry. (watch fast and the furious if you still dont know what NOS is)


please let me help you out dude! stop talking and you won't sound like such a fool. and morer isn't a word btw
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Old 02-06-2005, 04:21 AM   #11
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this has nothing to do with that question but i have an 89 civic hatch and i ran 2 and 1/4 inch pipe from the header back without a cat and my question is am i losing hp by removing the cat
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Old 02-06-2005, 04:33 AM   #12
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Originally Posted by 89HONDACVC
this has nothing to do with that question but i have an 89 civic hatch and i ran 2 and 1/4 inch pipe from the header back without a cat and my question is am i losing hp by removing the cat

More than likely lost some low end power, but gained some overall.
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Old 02-06-2005, 04:43 AM   #13
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this has nothing to do with that question but i have an 89 civic hatch and i ran 2 and 1/4 inch pipe from the header back without a cat and my question is am i losing hp by removing the cat

No, you can gain hp but it will be illegal to drive witout one
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Old 02-06-2005, 04:46 AM   #14
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Quote:
Originally Posted by aspen
i was wondering would it matter if i put in octance 87 vs, 89 or 91 in my 1997 civic? i beleive the user manual said to use 87 fuel, and thats what i have been using. however people tell me that 91 and 93 are better, because they cost more and contain less volitile substances. so i wanted to know should i switch to octane 91 or 93, or continue with regular? thanks
if tha manual says to go with 87 then go with that, having higher octane fuel in your car will in no way help performance(at least not in a stock vehicle)
but what you can do is run a better quality fuel such as chevron. 87(usually86) octane from chevron is better than 91 from a cheap place such as am/pm, due to the additives they use such as techron
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Old 02-06-2005, 06:53 PM   #15
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Originally Posted by aspen
so there is no advantage of using 91/93 over 87?

also i have seen gas stations where 87, 89, and 91 were all the same price, the price of preimum+, so everyone gets the 91.

They must do that out only on the west coast... Because they've never done it over on the East Coast.
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